The TMP light will come in if any of the tires has a variance of 5% or more in pressure from the tire pressure setting listed on the driver side door jam. Sometimes even the spare tire is equipped with a sensor, but it depends of the model of car.

If the TPMS light comes on and blinks, then there is a problem with one of the sensors. TPMS sensors can be recalibrated or replaced in each tire by most tire shops or at three times the cost at most dealers.

If it's not blinking then the system should be working correctly. It sounds like you just need to make sure the tire pressure is set to the same pressure on the door placard. Even 3 psi off is enough to set the light on a Chrysler. I checked for recalls or TSBs on this car and it doesn't look like there are any identified problems that would be fixed in a recall relating to the tire monitors.

3. Repeat this test on each wheel on the vehicle until the TPM Sensor in question has been identified.

4. Once the tire pressure sensor is identified, replace the sensor as needed.

5. After sensor replacement, drive the vehicle for a minimum of 10 minutes while maintaining a continuous speed above 24 km/h (15 mph). During this time the system will learn the new sensor IDs. With the scan tool, read DTCs in the Wireless Control Module (WCM). If no codes have reset, the repair is complete.